Home / 83,128.14-114,703.38-47,318.76

Finding the Fourth Proportional to 83,128.14, 114,703.38 and 47,318.76

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Solution

The fourth proportional to 83,128.14, 114,703.38 and 47,318.76 is: 65,292.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,128.14 : 114,703.38 = 47,318.76 : x
  2. Step 2: Convert to fraction form
    83,128.14/114,703.38 = 47,318.76/x
  3. Step 3: Cross multiply
    83,128.14x = 114,703.38 × 47,318.76
  4. Step 4: Simplify right side
    83,128.14x = 5,427,621,709.41
  5. Step 5: Solve for x
    x = 5,427,621,709.41/83,128.14
  6. Step 6: Final answer
    x = 65,292.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.